Merge afb-client

1 files changed, 310 insertions, 0 deletions

diff --git a/afb-client/bower_components/jszip/lib/zipEntry.js b/afb-client/bower_components/jszip/lib/zipEntry.js
new file mode 100644
index 0000000..70a3ac0
--- /dev/null
+++ b/afb-client/bower_components/jszip/lib/zipEntry.js
@@ -0,0 +1,310 @@
+'use strict';
+var StringReader = require('./stringReader');
+var utils = require('./utils');
+var CompressedObject = require('./compressedObject');
+var jszipProto = require('./object');
+
+var MADE_BY_DOS = 0x00;
+var MADE_BY_UNIX = 0x03;
+
+// class ZipEntry {{{
+/**
+ * An entry in the zip file.
+ * @constructor
+ * @param {Object} options Options of the current file.
+ * @param {Object} loadOptions Options for loading the stream.
+ */
+function ZipEntry(options, loadOptions) {
+    this.options = options;
+    this.loadOptions = loadOptions;
+}
+ZipEntry.prototype = {
+    /**
+     * say if the file is encrypted.
+     * @return {boolean} true if the file is encrypted, false otherwise.
+     */
+    isEncrypted: function() {
+        // bit 1 is set
+        return (this.bitFlag & 0x0001) === 0x0001;
+    },
+    /**
+     * say if the file has utf-8 filename/comment.
+     * @return {boolean} true if the filename/comment is in utf-8, false otherwise.
+     */
+    useUTF8: function() {
+        // bit 11 is set
+        return (this.bitFlag & 0x0800) === 0x0800;
+    },
+    /**
+     * Prepare the function used to generate the compressed content from this ZipFile.
+     * @param {DataReader} reader the reader to use.
+     * @param {number} from the offset from where we should read the data.
+     * @param {number} length the length of the data to read.
+     * @return {Function} the callback to get the compressed content (the type depends of the DataReader class).
+     */
+    prepareCompressedContent: function(reader, from, length) {
+        return function() {
+            var previousIndex = reader.index;
+            reader.setIndex(from);
+            var compressedFileData = reader.readData(length);
+            reader.setIndex(previousIndex);
+
+            return compressedFileData;
+        };
+    },
+    /**
+     * Prepare the function used to generate the uncompressed content from this ZipFile.
+     * @param {DataReader} reader the reader to use.
+     * @param {number} from the offset from where we should read the data.
+     * @param {number} length the length of the data to read.
+     * @param {JSZip.compression} compression the compression used on this file.
+     * @param {number} uncompressedSize the uncompressed size to expect.
+     * @return {Function} the callback to get the uncompressed content (the type depends of the DataReader class).
+     */
+    prepareContent: function(reader, from, length, compression, uncompressedSize) {
+        return function() {
+
+            var compressedFileData = utils.transformTo(compression.uncompressInputType, this.getCompressedContent());
+            var uncompressedFileData = compression.uncompress(compressedFileData);
+
+            if (uncompressedFileData.length !== uncompressedSize) {
+                throw new Error("Bug : uncompressed data size mismatch");
+            }
+
+            return uncompressedFileData;
+        };
+    },
+    /**
+     * Read the local part of a zip file and add the info in this object.
+     * @param {DataReader} reader the reader to use.
+     */
+    readLocalPart: function(reader) {
+        var compression, localExtraFieldsLength;
+
+        // we already know everything from the central dir !
+        // If the central dir data are false, we are doomed.
+        // On the bright side, the local part is scary  : zip64, data descriptors, both, etc.
+        // The less data we get here, the more reliable this should be.
+        // Let's skip the whole header and dash to the data !
+        reader.skip(22);
+        // in some zip created on windows, the filename stored in the central dir contains \ instead of /.
+        // Strangely, the filename here is OK.
+        // I would love to treat these zip files as corrupted (see http://www.info-zip.org/FAQ.html#backslashes
+        // or APPNOTE#4.4.17.1, "All slashes MUST be forward slashes '/'") but there are a lot of bad zip generators...
+        // Search "unzip mismatching "local" filename continuing with "central" filename version" on
+        // the internet.
+        //
+        // I think I see the logic here : the central directory is used to display
+        // content and the local directory is used to extract the files. Mixing / and \
+        // may be used to display \ to windows users and use / when extracting the files.
+        // Unfortunately, this lead also to some issues : http://seclists.org/fulldisclosure/2009/Sep/394
+        this.fileNameLength = reader.readInt(2);
+        localExtraFieldsLength = reader.readInt(2); // can't be sure this will be the same as the central dir
+        this.fileName = reader.readString(this.fileNameLength);
+        reader.skip(localExtraFieldsLength);
+
+        if (this.compressedSize == -1 || this.uncompressedSize == -1) {
+            throw new Error("Bug or corrupted zip : didn't get enough informations from the central directory " + "(compressedSize == -1 || uncompressedSize == -1)");
+        }
+
+        compression = utils.findCompression(this.compressionMethod);
+        if (compression === null) { // no compression found
+            throw new Error("Corrupted zip : compression " + utils.pretty(this.compressionMethod) + " unknown (inner file : " + this.fileName + ")");
+        }
+        this.decompressed = new CompressedObject();
+        this.decompressed.compressedSize = this.compressedSize;
+        this.decompressed.uncompressedSize = this.uncompressedSize;
+        this.decompressed.crc32 = this.crc32;
+        this.decompressed.compressionMethod = this.compressionMethod;
+        this.decompressed.getCompressedContent = this.prepareCompressedContent(reader, reader.index, this.compressedSize, compression);
+        this.decompressed.getContent = this.prepareContent(reader, reader.index, this.compressedSize, compression, this.uncompressedSize);
+
+        // we need to compute the crc32...
+        if (this.loadOptions.checkCRC32) {
+            this.decompressed = utils.transformTo("string", this.decompressed.getContent());
+            if (jszipProto.crc32(this.decompressed) !== this.crc32) {
+                throw new Error("Corrupted zip : CRC32 mismatch");
+            }
+        }
+    },
+
+    /**
+     * Read the central part of a zip file and add the info in this object.
+     * @param {DataReader} reader the reader to use.
+     */
+    readCentralPart: function(reader) {
+        this.versionMadeBy = reader.readInt(2);
+        this.versionNeeded = reader.readInt(2);
+        this.bitFlag = reader.readInt(2);
+        this.compressionMethod = reader.readString(2);
+        this.date = reader.readDate();
+        this.crc32 = reader.readInt(4);
+        this.compressedSize = reader.readInt(4);
+        this.uncompressedSize = reader.readInt(4);
+        this.fileNameLength = reader.readInt(2);
+        this.extraFieldsLength = reader.readInt(2);
+        this.fileCommentLength = reader.readInt(2);
+        this.diskNumberStart = reader.readInt(2);
+        this.internalFileAttributes = reader.readInt(2);
+        this.externalFileAttributes = reader.readInt(4);
+        this.localHeaderOffset = reader.readInt(4);
+
+        if (this.isEncrypted()) {
+            throw new Error("Encrypted zip are not supported");
+        }
+
+        this.fileName = reader.readString(this.fileNameLength);
+        this.readExtraFields(reader);
+        this.parseZIP64ExtraField(reader);
+        this.fileComment = reader.readString(this.fileCommentLength);
+    },
+
+    /**
+     * Parse the external file attributes and get the unix/dos permissions.
+     */
+    processAttributes: function () {
+        this.unixPermissions = null;
+        this.dosPermissions = null;
+        var madeBy = this.versionMadeBy >> 8;
+
+        // Check if we have the DOS directory flag set.
+        // We look for it in the DOS and UNIX permissions
+        // but some unknown platform could set it as a compatibility flag.
+        this.dir = this.externalFileAttributes & 0x0010 ? true : false;
+
+        if(madeBy === MADE_BY_DOS) {
+            // first 6 bits (0 to 5)
+            this.dosPermissions = this.externalFileAttributes & 0x3F;
+        }
+
+        if(madeBy === MADE_BY_UNIX) {
+            this.unixPermissions = (this.externalFileAttributes >> 16) & 0xFFFF;
+            // the octal permissions are in (this.unixPermissions & 0x01FF).toString(8);
+        }
+
+        // fail safe : if the name ends with a / it probably means a folder
+        if (!this.dir && this.fileName.slice(-1) === '/') {
+            this.dir = true;
+        }
+    },
+
+    /**
+     * Parse the ZIP64 extra field and merge the info in the current ZipEntry.
+     * @param {DataReader} reader the reader to use.
+     */
+    parseZIP64ExtraField: function(reader) {
+
+        if (!this.extraFields[0x0001]) {
+            return;
+        }
+
+        // should be something, preparing the extra reader
+        var extraReader = new StringReader(this.extraFields[0x0001].value);
+
+        // I really hope that these 64bits integer can fit in 32 bits integer, because js
+        // won't let us have more.
+        if (this.uncompressedSize === utils.MAX_VALUE_32BITS) {
+            this.uncompressedSize = extraReader.readInt(8);
+        }
+        if (this.compressedSize === utils.MAX_VALUE_32BITS) {
+            this.compressedSize = extraReader.readInt(8);
+        }
+        if (this.localHeaderOffset === utils.MAX_VALUE_32BITS) {
+            this.localHeaderOffset = extraReader.readInt(8);
+        }
+        if (this.diskNumberStart === utils.MAX_VALUE_32BITS) {
+            this.diskNumberStart = extraReader.readInt(4);
+        }
+    },
+    /**
+     * Read the central part of a zip file and add the info in this object.
+     * @param {DataReader} reader the reader to use.
+     */
+    readExtraFields: function(reader) {
+        var start = reader.index,
+            extraFieldId,
+            extraFieldLength,
+            extraFieldValue;
+
+        this.extraFields = this.extraFields || {};
+
+        while (reader.index < start + this.extraFieldsLength) {
+            extraFieldId = reader.readInt(2);
+            extraFieldLength = reader.readInt(2);
+            extraFieldValue = reader.readString(extraFieldLength);
+
+            this.extraFields[extraFieldId] = {
+                id: extraFieldId,
+                length: extraFieldLength,
+                value: extraFieldValue
+            };
+        }
+    },
+    /**
+     * Apply an UTF8 transformation if needed.
+     */
+    handleUTF8: function() {
+        if (this.useUTF8()) {
+            this.fileName = jszipProto.utf8decode(this.fileName);
+            this.fileComment = jszipProto.utf8decode(this.fileComment);
+        } else {
+            var upath = this.findExtraFieldUnicodePath();
+            if (upath !== null) {
+                this.fileName = upath;
+            }
+            var ucomment = this.findExtraFieldUnicodeComment();
+            if (ucomment !== null) {
+                this.fileComment = ucomment;
+            }
+        }
+    },
+
+    /**
+     * Find the unicode path declared in the extra field, if any.
+     * @return {String} the unicode path, null otherwise.
+     */
+    findExtraFieldUnicodePath: function() {
+        var upathField = this.extraFields[0x7075];
+        if (upathField) {
+            var extraReader = new StringReader(upathField.value);
+
+            // wrong version
+            if (extraReader.readInt(1) !== 1) {
+                return null;
+            }
+
+            // the crc of the filename changed, this field is out of date.
+            if (jszipProto.crc32(this.fileName) !== extraReader.readInt(4)) {
+                return null;
+            }
+
+            return jszipProto.utf8decode(extraReader.readString(upathField.length - 5));
+        }
+        return null;
+    },
+
+    /**
+     * Find the unicode comment declared in the extra field, if any.
+     * @return {String} the unicode comment, null otherwise.
+     */
+    findExtraFieldUnicodeComment: function() {
+        var ucommentField = this.extraFields[0x6375];
+        if (ucommentField) {
+            var extraReader = new StringReader(ucommentField.value);
+
+            // wrong version
+            if (extraReader.readInt(1) !== 1) {
+                return null;
+            }
+
+            // the crc of the comment changed, this field is out of date.
+            if (jszipProto.crc32(this.fileComment) !== extraReader.readInt(4)) {
+                return null;
+            }
+
+            return jszipProto.utf8decode(extraReader.readString(ucommentField.length - 5));
+        }
+        return null;
+    }
+};
+module.exports = ZipEntry;